JPS6294546A - Vessel and manufacture and sheet material and columnar sleeve used for said manufacture - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a container, a method for manufacturing the same, and a sheet material and a columnar sleeve used in the manufacturing.

[Conventional technology]

It is known to construct containers from various materials, especially for liquids.

[Problem that the invention seeks to solve]

When flexible materials are used, the problem is that such materials are often weak in the longitudinal direction (and containers made from them are fragile).

However, if the thickness of the sheet material increases, the cost of the container increases proportionately, making such types of containers often uneconomical.

SUMMARY OF THE INVENTION It is an object of the present invention to teach a new container that is economical to manufacture and has sufficient longitudinal strength, a method for its manufacture, and also sheets and sleeves for use therein.

[Means for solving problems]

The present invention provides a sheet material used for manufacturing a container, and also includes a columnar sleeve for manufacturing a container made of the sheet material and a container made from the same.

According to the invention, a method of manufacturing a container includes folding a flexible sheet along a number of spaced apart fold lines, each essentially defining parallel spaced apart fold lines. a step of joining the free end of the sheet to a long cylindrical sleeve; a step of cutting the cylindrical sleeve in a cross-sectional direction to an appropriate length to form a plurality of cylindrical sleeves; opening the shaped sleeve and sealing with an end member to close one open end; filling the container, such as a variety of beverages, from the other open end; and closing the remaining open end by means of an end cap. and closing and sealing the ends.

Further, according to the present invention, the sheet material used in manufacturing the container has a plurality of longitudinal folds provided on the sheet that are overlapped with each other at a distance, and a plurality of longitudinal folds for fixing the plurality of sheets in the longitudinal direction. It has attachment means for holding those folds in place.

The plurality of folds can be provided essentially in parallel.

Further, according to the present invention, a columnar sleeve for manufacturing a container includes a flexible sheet, a plurality of mutually spaced and overlapping longitudinal folds provided in the sheet, and a plurality of sheets arranged in a longitudinal direction. and attachment means for holding the folds in place for fixation to.

Attachment means for holding the superimposed folds may include welding, gluing, heat sealing, heat fusing, or other suitable means.

The cylindrical sleeve may have any suitable cross-sectional shape, such as a tube of essentially circular cross-section, a square, rectangular, triangular, or other polygonal cross-section.

The flexible sheet may be made of plastic sheet material, woven sheet material, layered sheet material, metallized plastic or aluminum foil or any other suitable type of sheet material.

As an example, the sheet material can also be made from a laminated material in which the following sheet materials or films are laminated and integrated.

That is, use of aluminum foil, LLDPE (linear low density polyethylene, PETC polyethylene terephthalate), LDPE (low density polyethylene), metallized PET, metallized PP (polypropylene), or PVdC (polyvinylidene chloride) coated PET, etc. I can do it.

Furthermore, the container according to the invention includes a flexible sheet, a plurality of spaced apart and overlapping longitudinal folds provided in the sheet and holding the folds in place to longitudinally secure the plurality of sheets. and an end closure member joined to and sealing each open end of the cylindrical sleeve.

The container contains a fluid, such as various beverages or paces.
, powders, solid particulates.

The invention will be further described with reference to the accompanying drawings, which show by way of example.

〔Example〕

1 to 4 show a first embodiment of a sheet material 10 according to the invention. The seam O of flexible material has longitudinal edges 12,14.

Between the same edges 12.14 is a folded portion 32. ...3
8 to define essentially parallel longitudinal fold lines 16 . ...30 are provided in pairs. These folded portions, when folded, are each held together by gluing, welding, heat sealing, or other suitable means.

Any number of fold lines may be provided, and the number of fold lines that overlap will determine the longitudinal strength of the integrally formed container of the flexible material.

Yet another example of an aspect of the invention is a sheet 40 shown in FIG. In the figure, the longitudinal edge 42,
Between 44 there are groups of essentially parallel fold lines having more fold lines than in FIG. Here, the fold line 46. ...76 is
Bending portion 78. ... are collected and grouped into four groups so as to define 84.

When folded together, a double folded section with higher strength is obtained, as shown in FIG. The folded portions are held together by adhesive or the like, as referenced in connection with FIGS. 1-4.

Referring to FIG. 8, one possibility for joining edges 12 and 14 (or 42 and 44) is shown. In this case, the edges overlap to provide an intermediate joint 86 between folded portions 38 and 32 (or 78 and 84).

However, as shown in FIG.
Folded portion 32 as shown in the figure or as an addition thereto. ...38 (or 7 days,...
It is also possible to provide a fold line 88 adjacent to the edge 14.44 and a fold line 90 adjacent to the edge 12.42 so as to define a fold 92 which can be replaced by the - in...84). be.

As mentioned above, the longitudinal edges 12.14 or 42.4
By joining the four ends together, a long cylindrical sleeve is formed. Such a sleeve is provided in a flat configuration 94, as shown in FIG. Thereafter, the sleeve 94 has columnar portions 96.1°96.2.
...96. cut into n. These parts96.
1°96.2. ...96. Each of n is made to stand upright in a columnar body for constituting a container to ultimately house the container.

Referring now to FIG. 11, the container 100 is comprised of one of the sleeves 96.1. Container 100 is closed at its ends by end caps 102 and 104. The end caps 102 and 104 are made of metal,
Made of rigid materials such as plastic, paper, board, or plastic or foil-covered paper or board, or laminated combinations thereof.

FIG. 12 shows a cutaway view of the cap 104 at one end.

As shown, the sheet lO has a layer of LLDPE, an aluminum foil 108 laminated thereon, an inner layer 106, such as a film of PE7110 laminated to the aluminum foil, and a layer 110 of LLDPE.
It consists of an outer layer 112 made of PE. The camp 104 has an inner layer 11 made of LDPE or LLDPE.
4 and the outer side of the aluminum foil layered on it
Constructed from laminated material with J116. Camp 102 also has a similar structure.

Camps 102 and 104 are joined to sheet IO by heat sealing, gluing, welding, or the like, as appropriate.

Caps 102 and 104 also include an outer layer of aluminum foil, an inner layer of LLDPE, and PET.
It is also possible to have a structure consisting of three layers with an intermediate layer consisting of.

13 to 16 show containers having various cross-sectional shapes. The container 100 of FIG. 13 has a square cross section with straight corners.

In FIG. 14, the container 118 also has a square cross-sectional shape, but its corners are rounded.

A container 120 having a triangular cross-sectional shape is shown in FIG. Here, the corner portion is constituted by a linear bent portion.

The container 122 in FIG. 16 has a polygonal shape (here, a hexagonal shape) with straight bent corners.

For example, when filled with a liquid (eg a beverage), the contents can be poured out of the respective container by breaking the side wall or end camp of the container. However, as another alternative, a reinforcement can be provided to allow attachment of a spout. An example thereof is shown in FIGS. 17 and 18. Here, the container 124 has a lug 126 glued or otherwise attached at 128 to the outer wall 130 of the container. A weakened area at 132 can be inserted such that spout 134 dispenses liquid from the container.

[Brief explanation of drawings]

FIG. 1 is a side view of a first embodiment of the sheet material of the present invention in a flat state. FIG. 2 is an enlarged view of one end of the sheet as viewed along the arrow ■ in FIG. FIG. 3 shows the folded portion of the sheet material of FIG. 1 before being joined. FIG. 4 is an enlarged view of one end of the folded portion when viewed along the arrow ■ in FIG. 3. FIG. FIG. 5 is a side view of a second embodiment of the sheet material of the present invention in a flat state. FIG. 6 is an enlarged view of the end portion of the sheet as viewed along the arrow ■ in FIG. 5. FIG. FIG. 7 is an enlarged view showing the end of the folded portion obtained by folding the sheet material illustrated in FIGS. 5 and 6. FIG. FIG. 8 is a diagram illustrating the sheet illustrated in FIGS. 1 to 7, showing a state in which the longitudinal free end of the sheet is joined between two folded portions. FIG. 9 corresponds to FIG. 8, but shows a joined state of the free end in the longitudinal direction of the sheet defining the folded portion. FIG. 10 is a reduced view of a long sleeve obtained from the sheet illustrated in FIGS. 1 to 9 before being laid flat and cut into sections. FIG. 11 is a perspective view of a container constructed from a folded cylindrical body made from the sheet material illustrated in the previous figures. FIG. 12 is an enlarged view of the cut end of the lid-to-wall connection taken along arrows xn-xn in FIG. 11; FIG. 13 is a plan view of the container of FIG. 11 taken along arrow X-- of FIG. 11; FIG. 14 is another cross-sectional plan view of the container. FIG. 15 is yet another cross-sectional plan view of the container. FIG. 16 is a plan view showing still another cross-sectional shape of the container. FIG. 17 is a perspective view of a container corresponding to that shown in FIG. 11, but with reinforced lugs for mounting an injection nozzle; FIG. 18 is a partially cutaway view of the container, showing the arrow X in FIG. 17.
It is a figure which shows the lag along ■-X■.

Claims (1)

[Scope of Claims] 1. A flexible sheet, a plurality of spaced apart overlapping longitudinal folds provided on the sheet, and the folds integrally formed to fix the plurality of sheets in the longitudinal direction. A container comprising a columnar sleeve having attachment means for holding the columnar sleeve in place and an end closure member for bringing each open end of the columnar sleeve into a joined seal. 2. The container according to claim 1, wherein the container is in a form that can be used for liquids such as beverages. 3. A container according to claim 1 or 2, which has a reinforcing lug on one side that allows the pouring member to be inserted into the container. 4. Folding the flexible sheet along a number of spaced apart fold lines to define folds arranged essentially parallel to each other and integrating the folds into a long tubular sleeve; joining the free ends of the sheets to a long cylindrical sleeve; cutting the cylindrical sleeve to length to form the cylindrical sleeve; and opening the cylindrical sleeve to form the sealed end. A method for producing a container, comprising the steps of: closing one open end with a member; filling a container such as a beverage from the other open end; and closing and sealing the remaining opening using an end cap. 5. a flexible sheet and a number of overlapping longitudinal folds spaced apart within the sheet;
1. A sheet material for use in manufacturing a container, comprising attachment means for integrally holding fold lines for fixing a plurality of sheets in the longitudinal direction. 6. Sheet material according to claim 5, characterized in that the folds are essentially parallel to each other. 7. The flexible material is plastic material, paper sheet material, laminated material,
Claim 5, characterized in that it is metal-plated plastic or aluminum foil, or a suitable sheet material.
The sheet material according to item or item 6. 8. The sheet material according to claim 5 or 6, characterized in that the flexible sheet is made of a laminated material containing the following sheets or films laminated: aluminum foil, LLDPE, PET, LDPE or PVdC
Coated PET. 9. includes a flexible sheet having a plurality of superimposed longitudinal folds spaced apart from one another, and attachment means for holding the plurality of folds in place for fixing the plurality of same sheets longitudinally; A columnar sleeve for manufacturing a container characterized by: 10. A columnar sleeve according to claim 9, characterized in that the plurality of folds are essentially parallel to each other. 11. Overlapping folds are welded, glued, heat sealed,
The columnar sleeve according to claim 9 or 10, characterized in that it is heated and melted or by other appropriate means. 12. A sleeve according to claim 9 or claim 10, wherein the sleeve has any suitable cross-sectional shape, such as an essentially columnar, square, rectangular, triangular or other polygonal cross-sectional shape. 13. Claim 9, wherein the flexible sheet is made of plastic sheet material, paper sheet material, laminated sheet material, metallized plastic or aluminum foil material, or other suitable type of sheet material. The sleeve according to any one of paragraphs 12 to 12. 14. The sleeve according to any one of claims 9 to 13, wherein the flexible sheet is a laminated structure comprising the following sheets or films laminated together: aluminum foil, LLDPE, PET, LDPE or PVdC coated PET.